455
FXUS65 KBYZ 111741
AFDBYZ
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BILLINGS MT
1141 AM MDT THU JUN 11 2026
KEY MESSAGES
- BREEZY WEST TO NORTHWEST WINDS WITH GUSTS OF 20-45 MPH TODAY.
HIGHEST GUSTS IN THE FOOTHILLS WEST OF BILLINGS AND ALONG THE
DAKOTAS BORDER.
- COOLER AND POTENTIALLY WETTER WITH A COLD FRONT, FRIDAY NIGHT
INTO SATURDAY.
UPDATE
TROWAL CONTINUES TO PRODUCE WIDESPREAD SHOWERS OVER THE EAST HALF
OF OUR CWA, WHILE DRIER DOWNSLOPE WEST WINDS HAVE OVERCOME SHOWERS
TO THE WEST. THE RAIN AT BILLINGS IS COMING TO AN END. PRECIP
FURTHER EAST WILL DIMINISH FROM WEST TO EAST THRU THE MORNING.
MESONET STATIONS HAVE SHOWN 0.10-0.25" OF RAIN OVER THE EAST IN
THE PAST 6HRS. HIGH ELEVATION WEB CAMERAS SHOW ACCUMULATING SNOW
IN THE BIGHORNS (ESPECIALLY AT GRANITE PASS BUT EVEN A DUSTING AT
BURGESS JCT AT ~7700'). UPSLOPE SNOW SHOWERS HAVE ENDED OVER THE
BEARTOOTH-ABSAROKAS AND HAVE CANCELLED THE WINTER WEATHER ADVISORY
FOR THE BEARTOOTH HIGHWAY, WHERE 1-2" LIKELY FELL DURING THE
NIGHT. HAVE ADJUSTED POPS/WX PER CURRENT TRENDS, AND HAVE EXPANDED
ISOLATED POPS IN THE AFTERNOON OVER OUR FAR EAST AS HIGH RES
MODELS SHOW SOME WEAK DIURNAL DEVELOPMENT, WHICH SEEMS REASONABLE
AS THE AREA WILL STILL BE UNDER THE PV AXIS. REGARDING WIND, GUSTS
ARE MAINLY IN THE 20S AND 30S, AND GENERALLY BREEZY CONDITIONS
WILL PERSIST THROUGH THE AFTERNOON. EXPECT GUSTS IN THE 30-40 MPH
RANGE UNTIL MID AFTERNOON. WINDS WILL DIMINISH THIS EVENING. JKL
DISCUSSION
TODAY THROUGH WEDNESDAY...
BREEZY WINDS CONTINUE ACROSS THE REGION INTO THIS AFTERNOON, AS
AN UPPER LOW CONTINUES IT'S SLOW EASTWARD PROGRESSION OVER
SOUTHERN CANADA. LOOK FOR THE STRONGEST GUSTS THROUGH THE EARLY
MORNING HOURS, IN THE 20S TO 40 MPH. LOCALLY GREATER GUSTS ARE
POSSIBLE FOR THE FOOTHILLS WEST OF BILLINGS, APPROACHING 50 MPH.
WINDS WILL DIMINISH FROM WEST TO EAST THROUGH THE AFTERNOON.
LINGERING SHOWERS AND A WEAK THUNDERSTORM OR TWO REMAIN POSSIBLE
INTO THE EARLY AFTERNOON, MAINLY OVER SOUTHEASTERN MONTANA AND
NORTHERN WYOMING. NORTHWEST FLOW LOOKS TO TAKE OVER INTO THE
WEEKEND, BRINGING SLIGHTLY COOLER THAN NORMAL TEMPERATURES IN THE
UPPER 60S TO LOW 70S AND MOSTLY DRY CONDITIONS THROUGH FRIDAY
AFTERNOON. AN UPPER SHORTWAVE IS SHOWN DROPPING THROUGH THE REGION
ALONG WITH A SURFACE COLD FRONT. THESE FEATURES LOOK TO BRING AN
INCREASED CHANCE OF PRECIPITATION, ESPECIALLY OVER THE MOUNTAINS
OF SOUTHERN MONTANA. COOLER 850-700MB TEMPERATURES LOOK TO
ACCOMPANY THE WAVE, WITH 850MB TEMPS BETWEEN 5-10C. MEANWHILE
700MB TEMPS LOOK TO BE AROUND TO BELOW 0C, BRINGING A LOW
PROBABILITY FOR LIGHT SNOW OVER THE HIGHEST ELEVATIONS OF THE
ABSAROKA/BEARTOOTH AND BIGHORN MOUNTAINS, IMPACTS TO RECREATION
AND TRAVEL THROUGH THE MOUNTAINS IS LOW AT THIS TIME.
THE AFOREMENTIONED UPPER LOW OVER SOUTHERN CANADA LOOKS TO GET
STUCK OVER ONTARIO INTO NEXT WEEK, KEEPING MUCH OF THE REGION IN
A NORTHWESTERLY FLOW PATTERN WITH THE CHANCE FOR ISOLATED TO
SCATTERED SHOWERS AND THUNDERSTORMS MOST AFTERNOONS/EVENINGS. THE
THREAT OF STRONG TO SEVERE STORMS REMAINS VERY LOW THROUGH THE
FORECAST PERIOD AT THIS TIME.
TEMPERATURES ARE CURRENTLY FORECAST TO BE IN THE UPPER 60S TO MID
70SF EACH DAY, POTENTIALLY BACK INTO THE 80S BY TUESDAY AND
WEDNESDAY. OVERNIGHT LOWS ARE FORECAST TO BE IN THE 40S AND 50SF
EACH NIGHT.
MATOS
AVIATION
ISSUED 18Z. SHOWERS CONTINUE TO DIMINISH OVER THE EAST THIS
MORNING. ISOLATED SHOWERS AND THUNDERSTORMS MAY REDEVELOP IN THE
EAST NEAR KMLS-KBHK-K97M THIS AFTERNOON. VFR WILL PREVAIL THIS
AFTERNOON THROUGH TONIGHT. GUSTY W-NW WINDS WILL CONTINUE THROUGH
THE DAY WITH WIDESPREAD GUSTS OF 25-40KTS, HIGHEST IN THE EAST.
WINDS DECREASE INTO TONIGHT WITH PASSING MID AND HIGH CLOUDS. STP
PRELIMINARY POINT TEMP/POPS
TDY FRI SAT SUN MON TUE WED
-------------------------------------------------------
BIL 074 049/078 051/066 045/071 047/077 052/087 059/088
0/U 00/B 75/W 01/U 01/B 00/B 11/U
LVM 070 041/076 043/062 038/068 039/074 044/084 050/087
0/U 00/U 66/W 11/U 01/U 00/N 01/N
HDN 073 045/077 048/066 042/071 044/075 048/085 055/087
1/B 00/B 74/W 01/U 01/B 00/B 12/T
MLS 070 047/075 049/066 045/071 047/073 049/081 055/084
2/W 00/U 31/B 00/U 11/B 00/B 12/W
4BQ 068 046/076 049/064 043/068 045/071 048/080 055/084
2/N 00/B 65/W 00/U 02/W 00/B 11/U
BHK 068 044/073 044/064 040/069 044/069 045/076 051/080
4/T 20/B 11/N 00/B 02/T 00/B 22/W
SHR 070 041/076 044/060 037/065 039/071 043/081 051/085
1/N 00/U 69/W 33/T 11/B 00/B 11/N
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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